CHAPTER 10 ECONOMICALLY USEFUL PLANTS AND ENTREPRENEURIAL BOTANY - CLASS 12 BIOLOGY BOTANY - 1 MARK QUESTIONS - ONLINE TEST

ப்ளஸ் டூ படிக்கும் மாணவர்களுக்கு இந்தத் தேர்வு பயனுள்ளதாக இருக்கும். இந்த யூ ட்யூப் தளத்தில் வரும் ஆடியோவை ப்ளே செய்து மீண்டும் மீண்டும் கேளுங்கள். ஆடியோவை கேட்கும் பொழுதே கீழே உள்ள கேள்வி பதில்களை SCROLL செய்து உற்று நோக்குங்கள். பிறகு கேள்விகளில் உள்ள சரியான விடையை தேர்ந்தெடுத்து கடைசியாக SUBMIT செய்யுங்கள். நீங்கள் எடுத்த மதிப்பெண் வரும் அந்த மதிப்பெண்ணை கீழே உள்ள கமெண்ட் பாக்ஸ் இல் பதிவு செய்யுங்கள். மதிப்பெண் குறைந்தால் மீண்டும் ஒருமுறை முயற்சி செய்யுங்கள்... வாழ்த்துக்கள் மாணவர்களே...அன்புடன் - K.K.D.

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1.

Consider the following statements and choose the right option.
i) Cereals are members of grass family.
ii) Most of the food grains come from monocotyledon.

a) (i) is correct and (ii) is wrong

b) Both (i) and (ii) are correct

c) (i) is wrong and (ii) is correct

d) Both (i) and (ii) are wrong

2.

🔽Assertion: Vegetables are important part of healthy eating.
🔽Reason: Vegetables are succulent structures of plants with pleasant aroma and flavours.

a) Assertion is correct, Reason is wrong

b) Assertion is wrong, Reason is correct

c) Both are correct and reason is the correct explanation for assertion.

d) Both are correct and reason is not the correct explanation for assertion.

3.

Groundnut is native of ______

a) Philippines

b) India

c) North America

d) Brazil

4.

🔽Statement A: Coffee contains caffeine.
🔽Statement B: Drinking coffee enhances cancer.

a) A is correct, B is wrong

b) A and B – Both are correct

c) A is wrong, B is correct

d) A and B – Both are wrong

5.

Tectona grandis is coming under family

a) Lamiaceae

b) Fabaceae

c) Dipterocaipaceae

d) Ebenaceae

6.

Tamarindus indica is indigenous to

a) Tropical African region

b) South India, Sri Lanka

c) South America, Greece

d) India alone

7.

New world species of cotton

a) Gossipium arboretum

b) G.herbaceum

c) Both a and b

d) G.barbadense

8.

🔽Assertion: Turmeric fights various kinds of cancer.
🔽Reason: Curcumin is an anti-oxidant present in turmeric.

a) Assertion is correct, Reason is wrong

b) Assertion is wrong, Reason is correct

c) Both are correct

d) Both are wrong

9.

Find out the correctly matched pair.

a) Rubber : Shorea robusta

b) Dye : Lawsonia inermis

c) Timber : Cyperus papyrus

d) Pulp : Hevea brasiliensis

10.

Observe the following statements and pick out the right option from the following :
🔽Statement I – Perfumes are manufactured from essential oils.
🔽Statement II – Essential oils are formed at different parts of the plants.

a) Statement I is correct

b) Statement II is correct

c) Both statements are correct

d) Both statements are wrong

11.

Observe the following statements and pick out the right option from the following:
🔽Statement I: The drug sources of Siddha include plants, animal parts, ores and minerals.
🔽Statement II: Minerals are used for preparing drugs with long shelf-life.

a) Statement I is correct

b) Statement II is correct

c) Both statements are correct

d) Both statements are wrong

12.

The active principle trans-tetra hydro canabial is present in

a) Opium

b) Curcuma

c) Marijuana

d) Andrographis

13.

Which one of the following matches is correct?

a) Palmyra - Native of Brazil

b) Saccharun - Abundant in Kanyakumari

c) Steveocide - Natural sweetener

d) Palmyra sap - Fermented to give ethanol

14.

The only cereal that has originated and domesticated from the New world.

a) Oryza sativa

b)Triticum asetumn

c) Triticum duram

d) Zea mays

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